I recommend reviewing your input in the federal interview section of the programs. Below is a list of the more common areas where you may have an entry for capital gains transactions.
Where do I enter a capital gain or loss? Typically, you will see this reported on Form 1099-B when there are proceeds and cost basis amounts reported.
Where do I enter my 1099-DIV in TurboTax Online? Sometimes, you will see capital gains reported in box 2a of a Form 1099-DIV.
Where do I enter a Schedule K-1 that I received? Line items will differ based upon the type of Schedule K-1 received, but many times, there could also be capital gains or losses reported on these forms that flow into your personal return.